Scraper



Nov. 13,1923. d www@ G. D, TOY ET AL SCRAPER Filed Aug. 28. 1.922 sshets-sheet 1 I N VEN TORS.

ATTORNEY.

Nov. 13, i923.

G. D. TOY ET AL SGRAPER Filed Aug. 28. 1922 3 Sheets-Sheet 2 IIL.

NVENTOR5 0` QL 7 QW@ ATTORNEY.

Nov. 13, 1923. mmm@ G. D. TOY ET AL SCRAPER Filed Aug. 28. 1922 3Sheets-Sheet 5 Fatenteel hier'. 1.3i, 11.923.

. GEORGE TOY AND HUGH T0?, @1F SXDNEJY, GEM). SCRAPER. Application ledAugust 28, 1922. Serial No. Ma-.331.

To aZ- Zwlz'omz't may concern.' Figure -9 shows this arrangement in con-Be 1t known that we, Gnono'n l). Tor and dltion for transportation. HUGHT. Tor, citizens of the United States, Figure 10 is a plan of thearrangement residing 'at Sidney, in the county of Shelby shown in Figs.7 to 9, inclusive, and 60 and State of Ohio, have jointly inventedFigure 11 is a detail view, showing an arnew and useful Improvements inScrapers, rangement for varying the length of the of which the followingis a specification. chains shown in Figure 10.

ur invention relates to Scrapers of the Referring now to Fi res 1 and 2,the class to be attached to a tractor and used for scraper comprises abla e 10 which is rein- 65 the various purposes, such. for example, asforced at the upper edge and ends by angles leveling dumps orback-filling ditches. 11 and 12F-12. Another angle, 13, is located heprincipal object of our invention is about the center of the blade. Onthe back to so construct a scraper of the class referred of the blade,at each end, is located a segto that it will not drag material with itas mental rocker 14, each having a removable 70 it moves backward. Thisis accomplished shoe or tread which can be renewed when by rocking thescraper blade from its opernecessary. A pair of links 15 is pivotallyative posit-ion to a 'recumbent position as it attached to the blade atits upper edge, the starts backward and elevating the blade other endsof the links being pivotally confrom the ground. Another object is to sonected to the tractor. A pair of short links 75 support the blade as itmoves forward that 16 is pivotally connected to the blade below althoughits lower edge rests on the ground the links 15, which links depend andat their and acts effectively, it is prevented from lower endsare'plvotally connected to long digging into the ground. Other objectsand links 17, the other ends of which are pivota vantages of Scrapersconstructed accordally connected to the tractor at points as S0 ing toour invention will be pointed out shown. When the tractor moves forward,as presently. is supposed to be the case in Fig. 1, `the The inventionwill be explained with the links 16 lie against the blade and the loweraid of the following drawings, in whichedge of the blade is pushed alongby the Figure l illustrates the preferred form of links 17, the effectbeing the same as though S5 our scraper in its operative position. It isthe links 17 were connected directly to the shown attached to a crawlingtractor, but it blade. And thus the links 15 and 17 cooperis to be.understood that any type of tractor ate to hold the blade in itsoperative posimay be employed. tion, that is, approximately vertical,allow- Figure 2 illustrates the. manner in which ing the lower edge ofthe blade to scrape 90 the blade is rocked into a recumbent positheground. As the link attachments are all tion. when the tractor backs.pivotal, the scraper is enabled to rest on the Figure 3 is a detailshowing a modified ground at all ti es andaccommodate itself arrangementof the lower link. to the surface it is moving over, regardless Figure 4shows an arrangement for backof whether the tractor is on higher orlower 95 filling a ditch where the tractor must be ground.' stationed onthe side of the ditch opposite When the direction of the tractorreverses to that lon which the earth has been piled. and it movesbackward, that is, to the left Figure 5 shows the operation of the as itis seen in Fig. 2, the bla-de rolls on scraper seen in Fig. 4 when thedirection of the rockers 14 to the recumbent position 109 the tractor isreversed. shown in Fig. 2, elevating the blade from Figure 6 shows thepar-ts seen in Fi s. 4 the ground so t at it cannot `drag any of and 5but assembled and attached to the the material back with it. The bladeis tractor dii'erently. enabled to assume this recumbent position Figure7 illustrates still another modiby virtue of the links 17 being attached305 cation. This type is designed more parto the blade by means of theshort links ticularly for cases where the scraper is liable 16. That is,as the tractor starts backward to be moved long distances without beingit draws the upper edge of the blade with in service. In this ligure thebladeis shown it, and also the links 17. But instead ot in operativeposition. the. links 17 drawlng the lower edge of the M0 Figure 8 showsthe same arrangement blade backward the short links swing away when theblade is being moved backward. from the blade allowing the blade toroll,

l dragging a quantity of the earth this result, one of .which and thisaction continues until the links `16 and 17 have assumed a positionsubstantially end on,"that is, the short and long llinks beingpractically in alinement. Then the scraper is dragged back, the rockersslidlng along the ground, and thus retro-movement of the material thescraper is acting upon is avoided. The elect of the links straighteningout in the manner described is as though the vlinks 17 had beenlengthened, that is as though they were telescopic, for example. Thereare other ways of effecting is shown in Fig. 3. There the link 16 isdispensed with and the link is attached to the blade by a stud 18 whichplays in a curved slot in a member 19.

As seen in Figure 1, the rockers act as guides andv prevent the loweredge of the scraper blade digging into the ground. The links 15 are madein two parts'so that their length may beadjusted, therebyT varying theposition of the blade with reference to the ground. The -links 17 areconnected by cross bars 20 and 21 to give lateral rigidity p to thestructure.

IOne of the uses of such a scraper is filling in ditches after thepurpose for which the ditches were dug has been accomplished Itfrequently occurs that there is no room for a tractor on the side of aditch on which the earth has been piled, and it becomes necessar tooperate the tractor on the opposite si e of the ditch. Fig. 4 shows,diagrammatically',l an arrangement of our invention for this purpose.This arrangement also illustrates a modification of our invention inwhich but two links are used linstead of four, and wherein the sameparts 'can be used for either pulling or pushing the scraper. i y

In this `construction the scraper is substantially the same as in thatalready described. The link 30 is pivotall attached to the .rocker 14 at31, and exten ing downward its lower extremity bears against the angle12 on the back of the blade. Extending some distance above the blade thelink makes a turn and runs at a downward slope to the point where it ispivotally attached to the frame of the tractor. Thus larche the link isenabled to pass over the pile of earth lbeside the ditch, and it isclear that/when the tractor moves backward, i. e., to the left as itisseen in Figure 4, it wil draw the scraper toward the open ditch, withit.The pivotal connection 31 and bearing of the lower end of the linkagainst the blade enable the single link 30I to maintain the rectitudeof the blade which in Figures 1, 2 and 3 requires two links.` Forobvious reasons a link 30 is placed at each end of the blade, just as inFigures 1 and 2 a pair of links is placed at each end. When the tractormoves-forward, that is, to the right I as seen in Figure4, the bladerolls on its rockers as in Il igure 5, this movement beingI limited bythe end of the link impinging on the inner surface of the rocker, as inFigure 5. l f i In Figure 6 the parts are the same as in Figure 4, butthe scraper has been turned around, and in order to bring itclose to thetractor the links have been attached to brackets 32 carried by tractorframe near its rear end. The term tractor is used in this specificationin ay broad sense, for while the type of tractor shown is especiallywell adopted to the purpose, it is obvious that other tractors, or evenother means than a tractor, .using the term now in a specific sense, maybe used for supporting the free ends of the links and moving thescraper.

We shall now describe the structure shown in Figs. 7 to 11, inclusive.Inasmuch as the blade and shoe are substantially like thosel shown inthe other views we shall use the saine numerals in referring to thosearts. Pivotally attached to the back of the blade 10, near its up andbelow'this bar, t edge of the blade, a attached. The free pivotallyconnected ol' a short bar 42, attached to the tractor at pivotalattachment 43 may able point on the tractor, we prefer to make .itcoincide with' the axis of the driving wheels. By referring to Fig. 8 itwill be seen that as the tractor backs, the shoe 14 rolling on theground rocks the blade just as it does in the other structures shown;when the tractor moves forward the blade rocks the other way, and thusthe blade is brought to operative or inoperative position as the tractormoves forward and backward.

In some kinds of service it becomes necessary to transport the scraperconsiderable distances, and to avoid thesevere wear on the rockers whichthis would entail, wc eapliip the rockers with wheels 44. These w eelsrun on studs projecting from brackets 45 secured in the rockers.Whenthewheels at is, near the lower bar 41, is pivotally respectively tothe ends this bar being pivotally 43. 'While the d are to be broughtinto use the blade is rocked to the position shown in Fig. 9, and it isretained in that position by a hook 46, pivoted to the bar 40 at 47, andengaging l the upper edge of the blade. The pivotal end of the hook isarranged to impinge on a'block 48 which is riveted to the bar 41,thereby rendering the condition shown in Fig. 9 stable. The hook has alaterally extending lug 49, which normally bears on a pin 50 set in bar40, and holds the hook 1n an angularly depending position, where it isadapted to engage the block 48 as the blade rocks in response tobackward movement of the tractor, and prevent the blade ends of thesebars arebe at any suit-A er edge, is a ba'r 40,

rocking' far enough to bring the wheel to the ground. (See Figure 8.)The h cut away at 51 to form a shoulder 52 which engages the block.

VWhile there are various ways in which we might limit the rocking of theblade as the tractor starts forward, we prefer to do this link may behooked latwise, as in Fig. 11.

eye 56 at the other side of the tractor, crossing the chains. Thesechains are attached to the eyes by the adjusting means just described.

While only the structure shown in Figs.

to 10 are equipped with Wheels it is obvious that the other structuresshown may also be so equipped.

that shown in our application number 584,- 930 tiled herewith fordriving gear for snow plows.

It is to be understood that We do not restrict ourselves to the specilicstructures shown, nor limited thereto except as it is limited by theappended claims.

by the tractor, and made to operative position when it .is oppositedirection.

scraper comprising a blade adapted to occupy an operative position andan inoperative position, a link pivotally attached to the blade, thefree endl of the link being tractor, and a segmental shoe attached tothe blade, adapted to rollon th is moved in the opposite direction.

scraper comprising a blade adapted to occupy an operative operativeposition, alink pivotally attached ing the movement of the bl positionand an in- 't to the blade, the free end of the link being adapted toattach to a tractor, a seguental shoe attached 'to the blade, adaptedto' 'oll on the ground when the blade is moved in one direction and rockthe blade with reference to the link from; its operative to itslnoperative position, and to rock the blade back to its operativeposition when it is moved in t e opposite direction, and means forlimitde with reference to the link, the blade being in operativeposition at one extremity/of said movement and inoperative position/ atthe other extremity thereof.

scraper comprising a blade adapted to operate in an approximatelyvertical position with its edge on the ground, a link -pivotally'attached to the blade, the free end oi t e hnk tractor, and

being adapted to attach to a of the link being adaptedto attach to ablade from position when the blade is moved in one operative positionwhen the blade is moved in the opposite direction.

scraper comprising a blade adapted to operate in an approximatelyvertical position with its edge on the ground, a link pivotally attachedto the blade, the free end ot' the link being adapted -to attach to atractor, a rocker attached to the blade adapted to roll on the groundand rock the de from its operative to a recumbent positionl elevatedfrom the ground, when the blade is moved in one direction. and from saidrecunibent to its operative position movement.

scraper comprising a blade adapted to operate in an approximatelyvertical position with its edh he ground, a link pivotally attached tothe blade, the free end of the link being adapted to tractor, a secondlink attached to the blade,

recumbent attach to a f" the `tree end of this link being also adaptedto to cooperate with to move it along th aining theA blade 1n operativeposition and,

e ground` and means shoe attached to the whereby, in effect, said secondlink is lengthened when the blade .is moved by the links in a. directionopposite 'to that in which it moves when in operation, thereby allowingthe blade to assume arecumbent osition.

8. A. scraper comprising a blate adapted to occupy an operative,position and an inoperative position, a link pivotally attached to theblade, the free end of the link being adapted to attach to a tractor, asegmental blade, adapted to roll on the ground when the blade is movedin onel direction and rock the blade with reference to the link from itsoperative to its inoperative position, and to rock the blade back to itsoperative position when it is moved in the opposite direction, means forlimiting the movement. ofthe blade with reference to the link, meansforremoving said limit at will, and a wheel adapted to relieve the shoe andassume the carriage of the blade whensaid limit is removed.

9. A scraper comprising a blade adapted to operate in an approximatelyvertical position with its edge on the ground, a link pivotally attachedto the blade,'the free end-of the link being adapted to attach to atractor, a rocker attached to the-blade, adapted to loll en the groundand rock the blade from its operative to a recnmbent position when the.blade is moved in one direction and from said recumbent to its operativeposition when the blade is moved inthe opposite direction, and a wheeladapted to carry the blade and hold the rocker off of the ground whenthe scraper is to be transported.

10. A scraper comprising a blade adapted to operate in an approximatelyvertical position with its edge on the ground, a link pivotally attachedto the blade, the free end of the link being adapted to attach to atractor, a rocker attached to the blade, adapted to roll on the groundand rock the blade from its operative to a recumbent position elevatedfrom the ground when the blade is moved in one direction, and from saidrecumbent 'to its operative position, when the blade is moved in theopposite direction; a second link attached to the blade, the free endthereof being also adapted to attach to a tractor, saidlink beingarranged to cooperate with the first link in maintaining the blade inoperative position and to I move it along the ground, and means whereby,`in effect, said second link i'slengthened when the blade is moved bythe links in a dition with its edge on the ground, a

rection opposite lto that in which moves when in operation, therebyallowing ,the bladeto rock to the aforesaid recumbent position, with itslow-er edge elevated from the ground. 11. A to operate scrapercomprising a blade adapted in an approximately vertical posip link tothe blade with its free end attached to a tractor; a second link, belowthe first, with its end attached to the blade by a short depending link,the other end of this second link being also attachable to the tractor;the relations of the links being such that when the tractor movesforward -and the end of the lower link abuts the blade the blade ismaintained in its vertical position, while when the tractor backsthelower link is permitted by the depending link to leave the blade andallow the blade to assume a recumbent position, the lower and dependinglinks assuming a position more or less rectilineal.

l2. A scraper comprising a. blade having a rocker on its back arrangedto slide on the ground while the blade is scraping and preventing theedge of the blade from digging into the ground, said rocker beingadapted to roll on the ground when'the blade is moved backward and rockthe blade to a recnmbent position with its scraping edge elevated; andan operating member whereby to move the blade forward and backward alongthe ground.

13. A scraper comprising a blade, means for bitching said blade to atractor, said pivot ally attached means enabling the tractor to move theblade forward and backward and permitting the blade to assume a verticalposition with its edge resting on the ground when it is moved forward,and to rock to a substantially horizontal' position when it is movedbackward, and means in which friction between parts of the scraper andthe ground is a factor, for causing the blade to assume a verticalposition upon being moved forward a short distance and to maintain saidposition as long as the blade continues to move forward, blade to rockhorizontal, and elevated from the ground, upon being moved a shortdistance backward and maintaining that position while it continues tomove backward.

GEORGE D. TOY. HUGH T. TOY.

and for causing the to a posltion approximately

